<!DOCTYPE html>
<html lang="zh_CN">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    
    <script src="https://cdn.bootcdn.net/ajax/libs/holder/2.9.8/holder.js"></script>

</head>
<body>
<img src="holder.js/550x360" />
</body>
</html>